Port 25 and Static/Dynamic IP for Listserve SW

[Piper]

Are you saying then that they are personally reading the mail to decide if 
it is "spam" or a public listserve?

That it is more than a technical matter of HW and automated SW to catch spam 
etc. and these ISPs are in effect listening in?

If so, all that port 25 and dynamic/static ip stuff is moot. It gets down to 
ISP personal decisions.

My thinking is this:

Either I use Majordomo or Mailman "as is" and I use them for PRIVATE lists, 
not public list service or I have Evolution modified for the 2 criteria I 
stated earlier. All that means is I need the same list service that Express 
gives me but in addition (1) an automatic sub-unsub feature; (2) a feature 
whereby everyone on the list gets his posting sent to all on the list.

Since that violates no Shaw rule, there should be no problem.

I ask my puter shop for estimates on the three alternatives above (unless 
they know of a ready-made program which does the job).

Should I switch to another public server instead of Yahoo? No, because I 
have no reason to expect they will be any better and I posted the complaints 
about Yahoo here earlier ..... and to Yahoo repeatedly.

In reply to Siggy who wondered if I had "commercial" purposes the answer is 
an emphatic NO.

I do not want the legal liability of being responsible for what other people 
put on lists over which I have no control. Also I cannot get rich from this 
because if I can set up my own private listserver (and it seems I can) then 
so can anyone else.

PS - Some day the same thing may have to be done with free public web sites. 
We may have to host our own web sites on our own computers.

----- Original Message ----- 
From: "Smoot Carl-Mitchell" <smoot at tic.com>
To: "Ubuntu user technical support, not for general discussions" 
<ubuntu-users at lists.ubuntu.com>
Sent: Saturday, July 18, 2009 1:11 PM
Subject: Re: Port 25 and Static/Dynamic IP for Listserve SW


> On Sat, 2009-07-18 at 11:35 -0700, Piper wrote:
>> Port 25 is just the normal SMTP port isn't it?
>>
>> So if I bcc this to 50 addresses of the ABC list in my Express mailbox it
>> goes through Port 25 to all 50. And it uses a "dynamic ip" address.
>> No problem.
>
> Only because your ISP recognizes you as a customer.  Try to send the
> same mail to another ISP.  These days most ISPs also require you to
> authenticate to the MTA.
>
> MTAs also listen on port 587 which is the mail submission port.  I have
> known ISPs to block all outbound connections to port 25 and only allow
> connections to port 587 of the their own MTA.  This was particularly
> aggravating, since when I am roaming, I forward mail via an
> authenticated connection via my own MTA on port 25.  I had to change the
> whole setup to use port 587.
>
> -- 
> Smoot Carl-Mitchell
> Computer Systems and
> Network Consultant
> smoot at tic.com
> +1 480 922 7313
> cell: +1 602 421 9005
>
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